On Saturday, 5 August 2017 at 17:08:32 UTC, Johnson Jones wrote:
using gtk, it has a type called value. One has to use it to get the value of stuff but it is a class. Once it is used, one doesn't need it.


Ideally I'd like to treat it as a struct since I'm using it in a delegate I would like to minimize unnecessary allocations. Is there any way to get D to allocate a class on the stack like a local struct?

The easy way is through std.typecons.scoped [1].
Here be dragons, though, because classes are reference types.

[1] https://dlang.org/phobos/std_typecons.html#.scoped

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